Pencil-sharpener.



No. 7o|,o27. Patented May 27,1902.

.1. H. FAssETT s. J. E. WARREN.

PENCIL SHABPENER.

(Application led Apr. 4, 1901.)

UNITEDl STATES PATENT OFFICE.n

JAMES H. FASSETT, OF NASI-IUA, AND JOHN E. \VARREN, OF GREENFIELD, NE\VHAMPSHIRE.

PENCIL-SHARPEN ER.

SPECIFICATION forming part of Letters Patent No. 701,027, dated May 27,1902. Application filed April4, 190i.. Serial'No.` 54,376- (Nomodel.)

To n/ZZ whom it may concern,.-

Bc it known that we, JAMES H. FASSETT, of Nashua, and J OHNE. WARREN,ofGreenfeld, in the county of Hillsboro and State of New Hampshire, haveinvented a new anduseful Improvement in Pencil-Sharpeners, of which thefollowing is a specification, reference being had to the accompanyingdrawi-ngs,'in which- Figure lis a front elevation of our newpencil-Sharpener. Fig. 2 is a plan view of the same. Fig. 3 is a centrallongitudinal sectional view of the pencil-holding device. Fig. 4 is asectional View on line A A, Fig. l; and Fig. 5 is a detail showing amodification hereinafter referredl to. Fig. 6 is a sectional View online B B, Fig. 5. i

Our invention relates to improvements in machines for sharpeninglead-pencils and for like purposes; and the object of our invention isto provide a machine which gives the wood a drawing cut-that is, a cntalong the grain of the wood.

Another object of our invention is to provide a machine in which thecutters may be readily changed, sharpened, or replaced.

A third object of our invention Lis to pro-f vide asimple and ei'licientmeans for holding the pencil.

A fourth object of our'invention isto pro-1 vide a machine which is ofsimple, durable,l

and cheap construction and of great capacity.

In the drawings illustrating the principle of our invention and the bestmode in which we have contemplated applying that principle, a is thesupporting-base, upon which are the standards ZJ and c. In standard b isjournaled the shaftp of the pinion d, that meshes with the gear e, theshaft of which is journaled in the standard c. Fast upon the same shaftwith the gear e is the bevel-gear f, that meshes with the bevel-gear g.The hollow shaft h of the bevelgear yg is journaled in the standard t',which is pivotally secured atj to the basca, so that the standard t' maybe swung horizontally. The pencilY Zt' is held within a split sleeveofVspring-metal Z, that passes vthrough the hollow shaft h. The nut mserves to lock the pencil k tightly within the sleeve. The cutter-platen is detachably secured by the screw o to the shaft p, so that itrotatestherewith. The knives q are twoedged, as shown in horizontal section inFig. 4. When the knives are dulled, the cutterset of cutting edges intouse.

Fig. 5 shows a modification in which the pieces fr," havingfile-surfaces, are inserted between the knives q near their bases. These.plate ,may be reversed, so as to bring a new tile-surfaces serve togrind the lead to a fine .6o

point.

The operation of our new pencil-Sharpener is as follows: The operator bymeans of the handle s turns the gear e, and thereby causes the pinion dand the bevel-gear g to rotate.

sleeve Z by the resiliency thereof and by the 7o nnt m. The rotation ofpinion oZ causes the rotation of the cutter-plate n, secured to theshaftp by the screw o. The standard 'L' being pivotallyV mounted atj onthe base, the pencil `is thrown into and out of contact with the knivesq by rotating the standard t on its vertical pivot The ratio of thegearing is such that the number of revolutions of the cutterplate n isgmany times that of the pencil lc,

andthe number of' knives q on the plate n 8o being large it results thatthe number of cuts `made during one rotationv ofl the pencil is verylarge. Hence the number of pencils which may be sharpened in' a `giventime or the capacity of the machine is large. the knives q are two-edged, a simple reversal of the cutter-plate n will present a new set ofcutting edges. Since Ithe cutter-plate is detachably secured, it may beremoved and the knives sharpened, a new or resharpened cntter-platebeing substituted for the one dulled.

Machines of this class aregenerally used by olice help, school-teachers,pupils, and others little accustomed to mechanical de- Since vices.Therefore it is essential that the ma- 95 chines should' be simple inconstruction, not liable to get out of order, and easily repaired andadjusted. These requisites our machine meets completely.

Vhat we claim isl. A pencil-Sharpener comprising a sup porting-frame,mechanism for holding the pencil, a rotary cutter-plate havin g two-edged knives projecting radially therefrom and adapted to make a drawingcut along the pencil, said cutter-plate being detachably and reversiblysecured to a shaft, and mechanism for rotating the cutter-plate.

2. A pencil-Sharpener comprising a supporting -frame, mechanism forholding the pencil, a rotary cutter-plate having two-edged knivesprojecting radially therefrom, said cutter-plate being detachably andreversibly secured to its shaft, and mechanism for rotating thecutterplate.

v cured to the shaft of said pinion; a drivinggea'r that meshes withsaid pinion; said gear having a shaft; a standard; a rotary pencilholderin said standard; and a pair of intermeshing bevel-gears, one fast uponthe shaft of said driving-gear and the other fast to said rotarypencil-holder.

6. In a pencil-Sharpener, a device for holding the pencil comprising aspring-metal sleeve having a yielding annular projection ou its interiorfor securing the pencil near one end, and having its other end taperedand slitted and provided with screw-threads on its exterior, and alocking-nut which secures said screw-threaded end to secure the pencilat said end.

7. In a pencil-Sharpener, the combination of a supporting-frame; adriving-shaft rotatively mounted.A therein; a cutter provided withradially-projecting arms sharpened at both their edges and reversiblymounted on said driving-shaft; means for detachably securing said cutterto said driving-shaft; a pencil-holder mounted on said supportingframe;and means for revolving a pencil in cutting contact with said cutter.

In testimony whereof we have hereunto set our hands, in the presenceoftwo subscribing witnesses, at Nashua, county of Hillsboro, State of NewHampshire, this 19th day of March, A. D. 1901.

JAMES Il. FASSETT. JOHN E. WARREN. Witnesses:

THOMAS F. MoRAN, NELLY A. COURTNEY.

